Perfect Partner for Your Patio Umbrella!Our fillable umbrella base stand measures 18'' x 12'' (Dia. x H) and the total weight(when being filled with water) including the base itself is 40 lbs. The large reservoir can hold up to 4 Gal water, 55 lbs sand, or 66 lbs sand and water, improving wind resistance and stability. Besides, it is made of premium Hdpe material, which can resist all weather, ensuring long-lasting durability. Thanks to the 2 adapters of 1.5'' and 1.9'' diameter, the umbrella stand is suitable for most 9-10 ft market umbrellas and patio table umbrellas. And with its exquisite pattern and classic black colors, this weighted umbrella base goes well with any decor theme.